The first post was here.
After the digging was done, the forms are put in place for the footings for the addition and garage parts of the project:
insulated concrete forms, (ICFs) go up. They are basically blocks made of foam insulation that stack up to form an inside and outside layer of insulation that will stay in place once the concrete is poured between them resulting in a solid 8" thick concrete wall with foam insulation on both sides. Here the forms are being put in place:
...and here they are braced and ready for concrete: